forked from osmocom/wireshark
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/* packet-oscore.h
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __PACKET_OSCORE_H__
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#define __PACKET_OSCORE_H__
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/* OSCORE uses AEAD algorithms defined in RFC8152 (COSE)
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* We only implement the default algorithm which corresponds to CCM*
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* */
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typedef enum {
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COSE_AES_CCM_16_64_128 = 10,
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} cose_aead_alg_t;
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typedef enum {
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STATUS_ERROR_DECRYPT_FAILED = 0,
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STATUS_ERROR_CBCMAC_FAILED,
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STATUS_ERROR_TAG_CHECK_FAILED,
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STATUS_ERROR_MESSAGE_TOO_SMALL,
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STATUS_SUCCESS_DECRYPTED_TAG_TRUNCATED,
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STATUS_SUCCESS_DECRYPTED_TAG_CHECKED,
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} oscore_decryption_status_t;
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/* Structure containing information regarding all necessary OSCORE message fields. */
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typedef struct oscore_context {
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/* Pre-Shared Parameters as Strings */
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gchar *master_secret_prefs;
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gchar *master_salt_prefs;
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gchar *id_context_prefs;
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gchar *sender_id_prefs;
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gchar *recipient_id_prefs;
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cose_aead_alg_t algorithm;
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/* Pre-Shared Parameters as Byte Arrays */
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GByteArray *master_secret;
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GByteArray *master_salt;
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GByteArray *id_context;
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GByteArray *sender_id;
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GByteArray *recipient_id;
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/* Derived Parameters */
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GByteArray *request_decryption_key;
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GByteArray *response_decryption_key;
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GByteArray *common_iv; /* IV used to generate the nonce */
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} oscore_context_t;
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/* Data from the lower layer (CoAP/HTTP) necessary for OSCORE to decrypt the packet */
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typedef struct oscore_info {
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guint8 *kid;
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guint8 kid_len;
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guint8 *kid_context;
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guint8 kid_context_len;
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guint8 *piv;
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guint8 piv_len;
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guint8 *request_piv;
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guint8 request_piv_len;
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gboolean response;
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} oscore_info_t;
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#endif /* __PACKET_OSCORE_H__ */
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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